Year Percent of total labor force (Units) 2017 5.000 2018 4.900 2019 5.200 2020 5.200 2021 5.100 2022 5.500 2023 5.200 2024 5.100 2025 5.100 2026 5.100 2027 5.100 2028 5.100 2029 5.100